Abstract
Bi2S3 nanoflowers arrays have been synthesised by a facile hydrothermal method. The nanoflowers are composed of nanobelts. The Bi2S3 nanobelts are along [1 3 0] direction with a width of about 100 nm and a length of about 2 µm. It is found that the substrate, the height of the substrate in the autoclave and the reaction time play key roles for the formation of the nanoflowers arrays. The growth of the nanoflowers is attributed to the lowest interfacial tension and the growth of the nanobelts can be ascribed to the anisotropic growth of the Bi2S3 nanocrystals. The room temperature photoluminescence (PL) spectrum shows that there is a strong and broad PL band in the wavelength range from 650 to 800 nm. It is expected that the Bi2S3 nanoflowers arrays grown on the substrate could have potential application in optics and catalysts.
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